Knob



FIG. 1 is a first perspective illustration of a knob according to the design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof, the left side view being a mirror image thereof; and,

FIG. 6 is a second perspective view thereof, showing the knob in a retracted position.

Throughout FIGS. 1-6, the broken lines denote environment and aspects of the knob that form no part of the claimed design.

The bottom view of the knob is excluded, because it is plain and unornamented and, therefore, forms no part of the claimed design. 

CLAIM The ornamental design for a knob, as shown and described. 